Parameter values set by the application

SOC-FUNCTION: A 16-byte character field containing SETSOCKOPT. The field is left-aligned and padded to the right with blanks.
S: A halfword binary number set to the socket whose options are to be set.
OPTNAME: Input parameter. See the table below for a list of the options and their unique requirements.
See the GETSOCKOPT command values information in z/OS Communications Server: IP Sockets Application Programming Interface Guide and Reference for the numeric values of OPTNAME.

Note: COBOL programs cannot contain field names with the underbar character. Fields representing the option name should contain dashes instead.
OPTVAL: Contains data which further defines the option specified in OPTNAME. For the SETSOCKOPT API, OPTVAL will be an input parameter. See the table below for a list of the options and their unique requirements.
OPTLEN: Input parameter. A fullword binary field containing the length of the data returned in OPTVAL. See the table below for determining on what to base the value of OPTLEN.